This is another frequently asked question and everyone needs to be prepared for answering this question before you face any Exam.
In the image below you can see the markings on the lifeboat of vessel Ever Greet(One of the largest container vessel.)
Starting from the Top of the life boat we have IMO number, Name of the vessel and also the life boat number as you can see in the image below IMO number is 9832729, Name of vessel is Ever Greet and Lifeboat number is 2.
2. Now lets have a look on side of a life boat
If it is a lifeboat or a rescue boat, In this case it can be used for both the purpose so its written Life / Rescue boat.
Below that we also have the name of Vessel.
Flag of the vessel – In this case PANAMA FLAG. (We have this marking on both sides.)
Maximum capacity – Maximum number of people it can have.
Diamension of the life boat. (Last image of the post shows the dimensions).
The list starts with one of the most basic things, the knowledge of Bay Row and Tier. If you already know this you can skip this paragraph to save time. Ship lengthwise is divided into bays and you can generally find it written on both sides of the hatch cover. So when you are walking on the main deck you can see the Bay number. The image below shows the Bay number marking onboard.
The image shows Bay 33 and Bay 34. Bay number is also marked on both extreme sides top of hatch covers.
Then we have Rows this is breath wise marking or transverse marking.
The center row is 00. Portside will have even numbers like 02, 04, 06 and so on depending on the width of the vessel, and starboard side will have odd numbers eg. 01, 03, 05.
And now we come to Tier, It is the height where the container is stored. Above the hatch cover, it starts from 72 then 74 then 76, and goes so on. At the bottom of the hold is 00 and just above that will be 02 then 04 and so on.
Example of Tier
The brown container is at Tier 72 and the green one is at Tier 74. in the image below.
In the image below the topmost container is at Tier 78.
With the knowledge of Bay, Row and Tier you can locate any container onboard the vessel.
Knowledge of base lock, Twist-lock and Mid lock.
As the name suggests it locks the base of the container to the hatch cover. Always remember to turn the lever right to open and left to lock the container in the base lock. The image below shows 2 baselock. The socket in which base lock is locked is called Base lock.
They are only used in the case of 20 feet container, Mid locks are not required when loading a 40 feet container. As the name suggests it is in the middle of the hatch cover. The image below shows the mid lock.
Each tier of the container is locked with the other tier of the container with twist locks. If not loaded properly or if the container does not sit properly its because of a twist lock. So while loading the crew keeps a close watch and report if any twist lock problem is noted. The image below shows the use of twist lock.
Container marking consist of fallowing –
There is a 4 letter code first 3 letters represent Owner code and the last letter represents Equipment category.
The serial number consists of 6 digits followed by 1 number check digit.
Below that 4 digit alphanumeric code. (It represents size and type of the container.)
Maximum gross – the Maximum combined weight of container and cargo.
Tare weight – Weight of empty container without any cargo.
Maximum payload – Maximum weight of cargo that can be loaded in a container
Containers also contain CSC certificate image is shown below-
The angle of repose, or critical angle of repose, of a granular material is the steepest angle of descent or dip relative to the horizontal plane to which a material can be piled without slumping.
Or it is the maximum horizontal angle at which granular particles can stack without using any other force or support.
Now, this might come to your mind that what is the maximum and what is the minimum angle of repose possible – So Theoretically speaking the angle will be between 0 and 90 degrees. Now let’s check which material has the largest and the least angle of repose –
Materials like Asphalt, Chalk, Coconut (Shredded), Coffee beans (Fresh), Earth, Gravel(Crushed stone) can have a maximum angle of repose up to 45 degrees. Whereas Looking to the least side we will have Urea, Wheat, Sand they can have as low as 27-30 degrees.
Following are the oral questions asked to the candidate, Click on the question to get answer (We are working on the answers). What we provide is a sample answer we cannot claim that our answer will be the best answer.
Declination (06d 22h): = N 024° 18.6 d (0.2): = 00.1 (D correction) Declination Mars: = N 024° 18.5
Now we will FIND – P and use ABC method for further calculations. P= 1440 58.5 (If LHA 180° P=LHA) A = Tan Latitude/ Tan P A = Tan 48° 00′ / Tan 144° 58.5 A = 1.584646985 N (A is named opposite to latitude, except when hour angle is between 090° and 270°). B = Tan Declination/Sin P B= Tan 024° 18.5′ / Sin 144° 58.5′ B = 0.787011353 N (B is always named same as declination) C = A+B = 2.371658338 N (C correction, A+/- B: If A and B have same name-add, If different name- subtract).
Tan Azimuth = 1/(CX Cos Latitude) Tan Azimuth = 0.6301399 Azimuth = N 32.2° W (Azimuth takes the combined name of C correction and Hour Angle – If LHA is between 0°and 180°, it is named “west”, if LHA is between 180° and 360, it is named “east).
True Azimuth= 327.8° Compass Azimuth= 327.0° Compass Error = 0.8° East Variation = 4.0° East (you can find this in ECDIS when finding compass error onboard) Deviation = 3.2° West
NAVTEX (NAVigational TEleX), It is a type of one communication system where we only receive navigational warnings sent by the Navtex station. NAVTEX was developed to provide information at low cost fortunately there is no user fees associated with receiving NAVTEX broadcasts.
Navtex is part of GMDSS equipment which is required to be fitted onboard every ship as per SOLAS Chapter IV Reg 7.
The international navtex frequency is 518 kHz, and these broadcasts should always be in English. National transmission (Generally in local Language)of navtex uses 490 kHz.
LIST OF NAVTEX STATIONS
The world is divided into 16 areas + 5 areas recently introduced for the Arctic region.
Navarea 1 – North Atlantic, North Sea, Baltic Sea
Navarea 2 – East Atlantic
Navarea 3 – Mediterranean Sea
Navarea 4 – West Atlantic
Navarea 5 – Brasil
Navarea 6 – Argentina, Uruguay
Navarea 7 – South Africa
Navarea 8 – India
Navarea 9 – Arabia
Navarea 10 – Australia
Navarea 11 – East Asia
Navarea 12 – Eastern Pacific
Navarea 13 – Russia
Navarea 14 – New Zealand, Southern Pacific
Navarea 15 – Chile
Navarea 16 – Peru
+ 5 areas recently introduced for the Arctic region
Life rafts are provided in addition to lifeboats on all the ships. They can be launched manually or even automatically when submerged in water with the help of HRU (hydrostatic release unit). Life rafts are stored in a fiberglass container, incorporated with a high-pressure gas used for inflating life raft at the time of emergency.
Liferafts should be stowed in such so as to permit the manual release of one raft or container at a time from the securing arrangements.
All liferaft provided on ships should be stowed with its painter permanently attached to strong point on the ship.
Liferaft should inflate automatically when the ship sinks. (we will talk about this later in this post)
Liferafts intended for throw-overboard launching should be stowed so as to be readily transferable for launching on either side of the ship.
Liferafts shall be so constructed so that it can withstand nature for 30 days in all sea conditions.
Liferafts shall be constructed so that it can be droped from a min height of 18m and works satisfatory. Maximum height depends on the place it is stowed.
It shall be provided by means of maunting SART at a height at least 1m above sea level.
What is Hydrostatic release unit (HRU)
The black cylinder in the above image is a HRU. When HRU is submerged in water by 4 m it will automatically cut the rope and liferaft is free to float clear to the surface.
HRUs may be either of the disposable type, in which case they are replaced every 2-4 years, or they can be of the type that has an unlimited life provided they are serviced and tested.
LIFE RAFT LOCATIONS
On a 399.98m long container vessel, We had 12 liferafts –
Initially, we thought of doing it free so that we can help people achieve confidence when they face actual interviews. But sorry to say we received calls were students were unprepared. So to make sure student is prepared we will charge so that we don’t receive spam calls. To gain confidence we recommend you to give an online sample interview where your seniors who are already placed will take your interview.
Normally here you will face 2 interviewer (1 male and 1 female ). One will take your HR and other will go for the technical part sometimes it might happen that only one interviewer takes the whole interview. We understand you might be in 2nd year, 3rd year or maybe from DNS course so we will try asking you relevant questions. Main motive is to make you confident to face the real interview.
Interview duration 20-30 minutes.
Waiting period maximum of 48 hours.
If interested email us on firstname.lastname@example.org